LTC Controls

At Shewmaker Electronics Inc. we currently repair all of the following types of LTC and 3 Phase regulator controls.

If you are searching for a particular model number, you can press Ctrl + F to bring up a search box at the bottom of your screen.
If you have questions about repairing an LTC control that is not on this list, please give us a call at 1-800-330-5409.





GE LTC Controls:


  • VR-1 – Static LTC control (Includes new relays)

  • LRT-200 – Static LTC control (Green board type)

  • LRT-72 – LTC control (Brown board type)

  • TMLT-32 – Static Regulator Control (Three phase green board type)

  • TMLT-32 – Static regulator Control (Three phase brown board type)

  • LRT-VACUUM – Vacuum fault indicator relay





WESTINGHOUSE LTC Controls:


  • SVR – Voltage regulating relay

  • UCA – Voltage regulating relay





SIEMENS-ALLIS LTC Controls:


  • MJ-2AT, MJ-3T MJ-3AT – “Watchdog” controls

  • IJ-2T, IJ-2AT – Solid state controls

  • SJ-4T, SJ-6T – Mag Amp controls

  • SJ-5T – Mag Amp controls





MOLONEY / TEMPO LTC Controls:


  • 650427 – Voltage sensor card only

  • 650428 – Time delay card only

  • 650484 – Complete voltage monitor assembly





COOPER (McGraw) LTC Controls:


  • 323061011 – Vacuum Fault Relay

  • Type 550 – Control assembly

  • VTSN 550 – voltage sensor relay only

  • TAC142255 – Solid state regulator control

  • CL-1, CL-2, CL-2A – Digital controls





BECKWITH LTC Controls:


  • M-0067 – Universal control

  • M-0127 – Current Relay

  • M-0145 – First House Protector

  • M-0170 – Current Relay

  • M-0270 – Universal LTC control

  • M-0278 – Allis LTC replacement

  • M-0279 – PT/McGraw LTC replacement

  • M-0280 – GE LTC replacement

  • M-0329 – LTC BACKUP RELAY

  • M-0338 – Allis 3-Phase Reg replacement

  • M-0355 – McGraw/Cooper replacement

  • M-0379 – PT/McGraw LTC replacement

  • M-2001 – Control Box

  • M-2279 – Adapter Panel

  • M-2280 – Adapter Panel

  • M-2347 – Adapter Panel